A new species belonging to the lichen genus Physconia is described from Alaska and the Canadian and American Rocky Mountains and adjacent forested regions. It is also reported from China, Nepal, India and Siberia. The new species, Physconia labrata, is superficially similar to P. perisidiosa, but can be distinguished by having a blackened, corticate lower surface and a paraplectenchymatous upper cortex.
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The Bryologist
Vol. 120 • No. 4
Winter 2017
Vol. 120 • No. 4
Winter 2017
Alaska
Alberta
cortex anatomy
New Mexico
phylogeny
Physciaceae
phytogeography